Liquid-soap dispenser.



sNo. 840,925.

PATENTBD JAN. a, 1907.

L. A, PALK. LIQUID SOAP DISPENSER.

APPLICATION FILED MAILS, 1906.

k, A d

5, PLHJJ FW Hi; NETU v1 H P Z l. ran sraras rarsnr carmen.

LoUIs la FALK, or sHIcAso, ILLINoIs, AssIGNoR or ONE-HALF 'ro GEORGE A. SCHMIDT, OF CHICACQ IIILINOIS.

LIQUID-soap DISPENSER. I

Specification of Letters Patent.

Patented Jan. 8, 1.967,

. zen ofthe United States, residing at Chicago, in the county of Cook and State of Illinois,

have invented certain new and useful Improvements inLiquid-Soa Dispensers; and

1do hereby declare the fol owing to be a full, c ear, such as will enable others skilled in the art to which it-appertains toV make and use the saine.

My invention relates to a novel construction in a valve for li uid-soap-dispensing apparatus, the object eing to provide a simle and ecient device of this character which will operate to dischar e at each opera'- tion a measured quantity o said soap; and it consists in the features of construction and combinations of arts hereinafter fully described and claimed? In the accompanying drawings, illustratin my invention, Figure 1 is a central vertica section of a valve constructed in accordance with nay-invention disposed upon .the

lower end of a receptacleadapted to contain liquid soap. Fig. 2 is a plan section of the.' on the line 2 2 of Fig. 3 is a plan view, on an'enlarged` same, on an enlarged scale, Fig. '1, scale, of the upper end of the piston. K

As before stated, my invention has for its object to `provide a simple and efficient valve for the purpose s ecied which is positive in operation and-wil cause a measured quantity of liquid to be discharged at each opera- -A ply of liquid tion. To this end my said valve consists practically of a miniature force-pump connected at its inlet end with the source of supsoap and the discharge end of 'which terminates in a discharge-nozzle rigidly connected With the piston of the pump whereby the latter is actuated.

I am aware that the forcehas been heretofore embodie this character; but vso far as I am informed such embodiment diers materially in many respects from my present invention, in which all operating parts are disposed so as to occupy the least possible space and aiford the greatest sim licity of construction and o eration and re atively the least liability to dlsorder and breakage.

My said device comprises the cylinder'A, which is open at one end-and at said end is provided with an annular flange B, which is and exact description of the invention,

-Which the 'stem of the inlet-va evice of internally threaded to receive the threaded neck of the receptacle C for liquid soap. vAt its othefr end said c linder is provide with an inte ral annular ange E, forming a sleeve in the rxlxollow piston-rod Fis telescopically and revolubly movable. The said hollow piston-rod F is integral with the piston G, disposed in said cylinder A and which carries the inlet and exhaust valves H and I. The said inlet-valve H is a mushroom valve adapted to' seat on'the valve-seat J, disposed in the inner face of said iston, aroundl an openin or port K through t e latter, the said valve being provided; preferably, with an X-shaped (in cross-section) stem, the longitudinal recesses in said stem constituting passages for the liqnormally held uid soap. The said valve H is on its seat by means of a spring, as will be hereinafter described. Thel said istOnrod Rasbefore stated, is hollow, and t e central openi ing therein is extended into the piston G, terminating below the upper face of the latter. Infthe said upper face an opening -L is bored, which intersects the central opening in said piston and cuts the wall thereo provide a longitudinal slot M, through which at one'sidel to communication is established between said central opening and said opening Il', the latter forming the valve-chamber in which the exhaust or delivery valve I is disposed.` In the bottom` of said valve-chamber L is a valveseat O, which is concentric with said chamber and with a small openin N in the bottom thereof. The said valve consists, preferably, of a ball which seats by gravity, The

said valve-chamber L is closed at the u per end by means of the screw-plug P, the ead of which is annularly enlargedy and adapted to enter the enlarged upper end of said chamber L. The latter is referably dilsiosd diametrically opposite t e openin through provided at one end with 'a loop adapted to receive the shank of said' screw-plug P and be valvel ve II passes,

IOO

clamped between the head .of the same Aand l the annulary shoulder formed by the annular enlargement of the upper vend of said valvecham l passes through an opening in the upper end er L. The free end of said spring R y e ablinv 1o annular flange U, adapted to receive-the'eX-- '1 ternally-threaded lower end of said pistonrod F and held securely in place on the latter by lmeans or" the lock-nut V. Disposed in the annular chamber between the'upper cnd= portion of said nozzle and said sleeve E andy piston-rod Fis a spiral comiression-spin W, bearing at one end o'n sal cylinderea D and at its other endy on said iiangeU 'andserving4 to normally hold said piston at the: 2o lower limit of its movement. f The mouth' f' ortion of said nozzle T is preferably annu'- arly'enlarged and-'Haring and is provided withsuitable means for the vadmission and discharge of air," such jas the openings Y therein My'said device operates as follows: The' receptacle carrying fmy device is suitably supported on or adjacent 'the washstand and the person desiring to wash places the' Y 3o palm of his or her handover the'mouth of the nozzle T and forces the= latter u wardly against the-.action QI' said spring This action forces said piston upwardly and obviously forms a partial vacuum in the annular 3 5 chamber formed between the cylinder-headandipiston and around the piston-rod, which fills as rapidlyL as the'said piston rises, the `inlet-valve H1 being opened against the action of the spring R by fluid-pressure exerted 4o thereon during its opening movement and said exhaust or discharge valve I bein maintained closed by the same means and its own gravity. The said nozzle is immedia'tely released, and the spring W then returns the same to its normal position, the piston during this` movement exerting "pressure onl the liquid contents of the pum -chamber,

which serves to force the said va ve I oil'` its-l seat and causes such liquid to enter said` 5o valve-chamber L and pass thence through said slot M and through said iston-rod F into the palm of the operators and. Duringthe downward movement of said piston the valvev H will obviously be' maintained l; 5 closed by the spring R and by the fluid-presf I sure. exerted'thereon. It will be noted that the pump-chamber` is normally entirely filled by said piston and all liquid and air exhausted therefrom at each operation. I be'- o lieve-:that this is very advantageous in enme" to'secure a higher vacuum than would otherwise be obtainable, and hence renders thejoperation of the device more positive. thinifilingof soap would always remain in said chamber, and this might cause the valve H to stick to thev cylinder-head. To prevent this, the opening movement of said 'valve is limited by its actuating-spring R, as before described. I desire also :to dil- `rect particular attention to the fact that the' piston and all art's'eonnected therewith are, freely revolub e, so that` a misguided operator can dio no harm by .revolving the nozzle vinstead of pressing the same upwardly. The

upward-movement of said iston is limited by contact of the upper end) of the nozzle T Awith the cylinder-head or-by contact -of the flan e U-withthe lower end 'ofsaid sleeve E.

ysaid device-is sim-ple,'compact, has relatively lfew'fparts, and is 'readily assembled andI takenapart for-purposes of repair.'

" I claim as `my invention-e 1. A deviceof therkind specified compris- -ing a pump-cylinder-.openv at oneend and provided at its other end witha head yhaving a central opening, a piston-reciprocally movable in said cylinder and provided with a hollow piston-rod passing through said opening in said l1`ead,a valve-chamber in said piston communicating with said4 piston-rod and iwith thepump-cha'mber, a valve disposed in -said chambery for normally 'shutting oill com- 'munication/4 with' said pump-chamber,l an

openilngin said piston establishin commu.- nication betweensaid `pump-cham er and a sourc'e of sup ly of liquidfdonnected withof `s'aid cylinder,:a springsaid llopen en pressed valvelcontrolling said port' at yits pump-chamber end, and a` spring disposed in o erative relation to said piston to maintain t e same normally in contact with said cylinder-head.

2. A device of thefkind speciiied=,-comprising a pump-cylinder communicating at one end with a source of supply of liquid, a head -on the other'end of said cylinder provided witha central opening, a piston disposed in said cylinder, a hollow piston-rod connected therewithand'passing throu h said opening in said head, a valve-contro led outlet-port therein communicating at V'its delivery end with said piston-rod, anda spring disposed IOO in operative relation to said piston to maintain the same normally at one limit of'its` movement. v

3. A device of thekind speciiied, comprising a pump-cylinder communicating at one end with a source of sup ly of liquid, a head on the other .endof said witha central opening, a piston disposed in said cylinder, va hollowl piston-rod connected therewith and passing through said opening in said head, Lan inlet-port in said piston, a

vvalve'control-ling the same; on the pressure side of said piston, a stem on said valve 'passing through said port, a bar-.spring engaging said' free end of said valve-stem and at its free end spanning, the said inlet-port to limit the opening movc'n'ient ol said valve, a valvecontrolled outlet-port in said piston comcylinder provided municating at its delivery end with said holannular ilange surrounding said opening and lowpiston-rod, and a s ring disposed in opconstituting a hollow stem, a piston disposed -eratlve relation to sai piston to maintam in said cylinder, a hollow piston-rod connectthe same normally at one limit of its moveed therewitl and passing. through said ho l 3o 5 ment. low stem, a .valvecontrolled inlet-port m 4. A device of the kind specified, comprissaid piston, a valve-controlled discharge-port ing a ump-cylinder communicating at one communicating with said hollow piston-rod,

end wlth a source of supply of liquid, ahead an annular flange on the other edge oi fthx on the other end of said cylinder provided head end of said cylinder dispose paralle 35 1o with a central opening, a piston disposed in With said hollow stem, a nozzle secured to the said cylinder, a hollow piston-rod connected free end of said piston-rod, an annular ilange therewith, and passing throu h said central on said nozzle projecting at its free end into opening in said cylinder-hea a valve-conthe annular space between said last-named trolled inlet-port in said piston, a valve-conflange and said hollow stem, and a spring dis- 4o x 5 trolled discharge-port communicating at its posed within said flange on said nozzle and delivery end with said piston-rod, a removbearing on the latter and said cylinder-head able nozzle disposed on the free end of Said to maintain said piston normally at one limit piston-rod,4 and a spring interposed between of its movement. said nozzle and said cylinder-head ada ted In testimony whereof I have signed my 45 zo to maintain said piston normally at one imit name in presence of two subscribing witof its movemen nesses.

5. A device of the kind specified, comprising a pump-cylinder open at one end and LOUIS A FALK' communicating at said end with a source of Witnesses 25 supply of liquid, a head on the other end of RUDOLPH WM. Lo'rzl said cylinder having a central opening, an A WILSON. 

